Trolley.



0; BAUER, JR-

F. G. BAUER, SB- & F.

TROLLEY.

APPLICATION FILED MAY 1. 190B.

Patented Dec; 15, 1908v WITNEQSQES ATTORNEY be as equal] trolley, a

section. wheel showing the different elevations of the UNITED sflfnrrns PATENT OFFICE.

FREDERICK 'C. BAUER, SR., AND FREDERICK O. BAUER, JR, OF CAMDEN, NEW JERSEY.

TROLLEY.

Specification of Letters Patent. I

Patented Dec. 15, 1908.

Application filed Kay 1, 1908. Serial No. 480,527.

To all whom itmmy eomem: A

Be it known that we, FREDERICK G, Bapnn, Sn, and Fnnonmox C. BaimraJn, read at Gamden, county of Camden, and State 0 New Jersey, have invented a certain new and useful Improvement in Trolleys, of which the following is a specification.

Our invention re ates to a new and useful improvement in trolleys, and has for its obect to provide an exceedingly simple and effective device of this character WhlChWlll effective'in winter as-in summer and a pted to keep the wire central of the trolley and directed to the center in case the wire comes in contact with any other portion of the trolley surface.

A further object of our invention is to provide a trolley which will be self lubricating,

With these ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, we will describe its construction in detail, referring by letter to the accompanying drawing forming a part of this specification, in Which- Fi ure 1 is a side elevation of a portion of a trdlley harp rovide'd with our improved ortion thereof being shown 1g. 2, an end view; of a trolley helix, and Fig. 3, a sectional View at the line XX of Fig. 1.

In carrying out our invention as here embodied, A represents a trolley harp or standard which ma struction but here s own as having the upper ends of the forked portion rounded as ndicated at B so that it will not come in contact with the cross wires which hold the trolley wire in osition.

C- in 'cates a resilient metallic material the lower portion of which is secured to the ends of the harp by=meansof the screws D,

said material resting the free portion of p the trolley wheel, thus against the ends of reducing the noise caused by rattling to' a 'mimmunr.

E represents a portion of our improved trolley wheel which is a small roller ha a deep groove F therein and this 1s centra y be of the ordinary con spira upon the axle G. On either side of this portion E is placed a conical elongated roller H and I whlch taper from the outer to I the inner ends and the peripheries thereof are rovided with deep spiral grooves the genera direction of which runs from the outer ends to the inner ends or toward the small roller E. These rollers H and I are hollow and have a hollow shaft H formed therewith and running through the central portions thereof, and these hollow shafts have formed therein the opeirings J to allow the oil to pass from the hollow ortion of the rollers H and I on to the axle In order that oil or other suitable lubricant may be placed in the hoilow portions of the rollers H and I, we provide the o enings K which is threaded the screwplug so that dust or any other foreign substance may be revented from entering the same. On the inner ends of the rollers H andI are formed the bosses M whichrest against the rollerE thus limiting the movements of said roller E. On the surface of the axleG are formed the grooves N the general direction of which runs from the outer ends to the central ortion thereof so that the oil which passes rom the rollers H and I will'be directed toward the ripller E thus keeping, it always well lubri cate It will be seen that the trolle thus made is simple but effective, will ma e but little noise and needs but little attention as one filling of oil will last aco'nsiderabletime.

Having thus fully described our invention, what we claim as new and useful, is-

1. In a trolley, a harpthe ends of the fork being rounded,-a resilient metallic material secured thereto, having a groove, hollow conical rollers having deep spiral grooves cut on the eriphery thereof and an opening formed tierein in which a threaded lug is adapted to be in serted, a hollow'shaft formed through the central portion of said rollers having openings formed therein, bosses formed on the ends of the spiral rollers,

a centrally located roller and an axle having? grooves formed thereon 1passing through the rollers, the ends of whic forked portion of the trolley'harp, and described.

2. A trolley consisting of a centrally located roller having a groove cut therein, elon ated rollers having tapered ends with l grooves about said tapered portions.

as shown are secured to the communicating with said centrally located against the ends of the elongated rollers preroller, said elongated rollers having openings Venting the rattling of the same, as specified. out therein, plugs adapted to be threaded in In testimony whereof, We have hereunto said openings, shafts centrally located within affixed our signatures in the presence of'two said rollers having openings formed therein, subscribing Witnesses. bosses formed on the inner ends of said elon- FREDERICK G B {X'EER SP gated rollers, a shaft having grooves formed 7 v 1 f p thereon passing through said rollers secured B REDLRIC K to the ends of the forked portion of a trolley Witnesses: ha and resilient members secured to the FRANK RICHARD LIEBERT, on of a trolley harp adapted to press| OTTO BETZ. 

